ok so then 3 things..
1. It's not clear what the teacher did that deserved (bad) karma. Idk if asking her student a simple math question counts (?)
2. It's not clear what the bad karma was that happened to her.. The kid was still suspended from school for his smart ass answer.. just not grounded anymore. Idk how that affects the teacher(?)
3. How would the teacher even know? This is a text message conversation between a dad and his kid.